Thermatop M: heating and cooling from the ceiling.
Uponor Thermatop M is a water-based ceiling heating and cooling system. Modules concealed inside the plasterboard ceiling transfer heat mainly by radiation, leaving a seamless, non-directional and clean ceiling surface.
Uponor · ceiling systemSeamless plasterboard ceilingOne ceiling, two seasons.
The temperature of the water in the pipes inside the ceiling changes, and the system switches roles with the season. Heat is carried not by blowing air but by radiation between surfaces; there are no draughts or fan noise in the room.
The ceiling becomes a warm surface
Warm water warms the ceiling; radiation directly heats the surfaces and people in the room. Heat output reaches up to 105 W/m².
The ceiling absorbs heat
Cool water cools the ceiling; excess heat in the room is drawn to the ceiling. Cooling output reaches up to 67 W/m², with no feeling of draught.
Invisible comfort.
Silent and even
No fans or blowing; heat is distributed evenly across the entire ceiling surface.
Architectural freedom
Seamless, non-directional ceiling surfaces; no clutter of radiators, air-conditioning units or vents.
Acoustic comfort
A calmer environment in offices and meeting rooms thanks to a high sound absorption coefficient.
Clip onto the profile, close the ceiling.
Prefabricated, lightweight modules clip onto the CD profiles of the ceiling substructure with fixing rails. Installation is fast and tool-free; standard modules fit conventional suspended ceilings.

| Module width | 277 mm |
|---|---|
| Standard module lengths | 950 · 1350 · 1750 · 2150 · 2550 mm |
| CD profile spacing | 333 mm |
| Cladding | Plasterboard or Thermoboard · 10 mm |
| Pipe | Multilayer composite (MLCP) |
| Heating output | Up to 105 W/m² · EN 14037 · Δθ 15 K |
| Cooling output | Up to 67 W/m² · EN 14240 · Δθ 8 K |
| Sound absorption | αw 0.60–0.65 · DIN EN ISO 354 |
Values are from the Uponor product catalogue; output and acoustic values vary with the plasterboard used.
Specification details
- Water-based heating and cooling ceiling system
- Lightweight, prefabricated modules in flexible lengths
- High heating and cooling capacity
- High sound absorption coefficient
- 100% diffusion resistance thanks to multilayer composite pipes
- Integration of lighting, ventilation vents, fire alarms, sprinklers and speakers
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Let’s get your ceiling ready for climate control.
Let’s work out the heating and cooling loads and the module layout together for your office, hotel or residential project.
